djvu | a27483fe804d0e199d0bfe075a907e3a94d057ee95799cd633b41ac151372885

Analysis

max time kernel
148s
max time network
141s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 10:32

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General

Target

b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Size

815KB
MD5

218d225011859a07ef0137e9314be2d0
SHA1

5e1645cde252685e2fcfb8a93b88c104882ac6d3
SHA256

b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab
SHA512

ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee
SSDEEP

12288:SEJudv2Cy3nRH+BfcS6VC+bamRinL/6qmq3drGO5ddh+Zx1Fe3Lk6wHkBuDwzUY5:Yv43p4/6xVyLSqmg+VFe3LvCUX0gg8r

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://acacaca.org/test1/get.php

Attributes

extension
.vvew
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-QsoSRIeAK6 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2496-5-0x00000000004E0000-0x00000000005FB000-memory.dmp	family_djvu
behavioral1/memory/2832-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1072-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2692	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\31dd479c-9680-455e-8307-348616a0fc65\\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe\" --AutoStart"	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 1980 set thread context of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
1072	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
1072	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2496 wrote to memory of 2832	2496	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	30
PID 2832 wrote to memory of 2692	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	31
PID 2832 wrote to memory of 2692	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	31
PID 2832 wrote to memory of 2692	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	31
PID 2832 wrote to memory of 2692	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	31
PID 2832 wrote to memory of 1980	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	33
PID 2832 wrote to memory of 1980	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	33
PID 2832 wrote to memory of 1980	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	33
PID 2832 wrote to memory of 1980	2832	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	33
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34
PID 1980 wrote to memory of 1072	1980	b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe	34

C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
"C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
  "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2692
- - C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
    "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1980
  - - C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
      "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
65194add1e0a459c0ed8db371273b4ef

SHA1
a93e205222aa651ed479f8f5762e821c7cdccba9

SHA256
ecbc78bb96aec164d1e134ecb98154dae84e7e6e17cae6af6f3b3d89b3a54ea1

SHA512
293d2307afdd13e7f521da75c8df45b0ddd94a04dd8face621e010774886b4417aa2ce7f60634072d83958da82ca969f94bc0e125169bb37a0dcc2bb4eace01b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
55687eceab008685ba12b68edaa92f48

SHA1
cf0376b40ab78d9c2e79f279aa27e0bc7518d3d6

SHA256
b6123e5f27c1e1af4515ea1142db5c5e7b9f2a83f6726c4cbd5ea5c4066de597

SHA512
96ef49687f2ddbacfb7c198b84f70ab2c9b0cfe7e98f59b17f377ac8289a3309e5b651c406f72a6420dd0dee9ef01a72b2c9cfbd5c8bfc62b131ab4ebe2cfd0e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
b3868796c14d1162d57ca5b77b457e22

SHA1
12e800aaae5e1409e1f4fe970392e67c2c12cc35

SHA256
a7a8898394b8df9f7cde3fc04dfaafef6919c02c619a9a5d90f8eaa9168f9342

SHA512
a66d1782074405a72e7a0d77ba711caa5e01dcc1a036a380a120c120776093e3c56c143f53d0ac90cfee81d9e4edb735aa6a97c1c61441253cd75ee832c6c102

Download Submit
C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

Filesize
815KB

MD5
218d225011859a07ef0137e9314be2d0

SHA1
5e1645cde252685e2fcfb8a93b88c104882ac6d3

SHA256
b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab

SHA512
ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab538C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1072-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1980-36-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1980-30-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1980-29-0x0000000000320000-0x00000000003B2000-memory.dmp

Filesize
584KB

Download
memory/2496-7-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2496-5-0x00000000004E0000-0x00000000005FB000-memory.dmp

Filesize
1.1MB

Download
memory/2496-1-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2496-0-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2832-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download